Preparation method of poly(acrylamide-vdt)/ta high-strength hydrogel
A technology of acrylamide and methylenebisacrylamide, applied in bandages, medical science and other directions, can solve the problems of hydrogel instability, unstable gel performance, etc., and achieve excellent mechanical properties, low production cost, and high production efficiency. short cycle effect
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Embodiment 1
[0037] 1) Weigh 0.1g of VDT into a three-necked flask, add 5ml of dimethyl sulfoxide, stir and dissolve at room temperature, accounting for 3.4wt% of the total amount of VDT and acrylamide;
[0038] 2) Weigh 3.554g of acrylamide, 0.0073g of ammonium persulfate, and 0.0083g of methylenebisacrylamide in a beaker at room temperature, add 5ml of dimethyl sulfoxide to prepare a mixed solution; the concentration of acrylamide is 4.0mol / L, the concentration of ammonium persulfate is 0.0050mol / L, and the concentration of methylenebisacrylamide is 0.0054mol / L;
[0039] 3) Mix the mixed solution in step 2) and the VDT solution in step 1) in an ice-water bath at 0° C. and stir evenly, and add 60 μL of tetramethylethylenediamine one hour later to obtain an acrylamide-VDT mixed solution;
[0040] 4) Inject the acrylamide-VDT mixed solution obtained in step 3) into a glass mold separated by a hollow silicone rubber gasket, place it in a hot water bath environment at 50°C, and react for 12 h...
Embodiment 2
[0046] 1) Weigh 0.3g of VDT into a three-necked flask, add 5ml of dimethyl sulfoxide, stir and dissolve at room temperature, accounting for 12.33wt% of the total amount of VDT and acrylamide;
[0047] 2) Weigh 2.132g of acrylamide, 0.0064g of ammonium persulfate, and 0.0083g of methylenebisacrylamide in a beaker at room temperature, add 5ml of dimethyl sulfoxide to prepare a mixed solution; the concentration of acrylamide is 3.0mol / L, the concentration of ammonium persulfate is 0.0044mol / L, and the concentration of methylenebisacrylamide is 0.0054mol / L;
[0048] 3) Mix the mixed solution in step 2) and the VDT solution in step 1) in an ice-water bath at 0° C. and stir evenly, and add 40 μL of tetramethylethylenediamine one hour later to obtain an acrylamide-VDT mixed solution;
[0049] 4) Inject the acrylamide-VDT mixed solution obtained in step 3) into a glass mold separated by a hollow silicone rubber gasket, place it in a hot water bath environment at 50°C, and react for 10...
Embodiment 3
[0055] 1) Weigh 0.3g of VDT into a three-necked flask, add 5ml of dimethyl sulfoxide, stir and dissolve at room temperature, accounting for 9.55wt% of the total amount of VDT and acrylamide;
[0056] 2) Weigh 2.843g of acrylamide, 0.0051g of ammonium persulfate, and 0.0034g of methylenebisacrylamide in a beaker at room temperature, add 5ml of dimethyl sulfoxide to prepare a mixed solution; the concentration of acrylamide is 4.0mol / L, the concentration of ammonium persulfate is 0.0035mol / L, and the concentration of methylenebisacrylamide is 0.0022mol / L;
[0057] 3) Mix the mixed solution in step 2) and the VDT solution in step 1) in an ice-water bath at 0° C. and stir evenly, and add 50 μL of tetramethylethylenediamine one hour later to obtain an acrylamide-VDT mixed solution;
[0058] 4) Inject the acrylamide-VDT mixed solution obtained in step 3) into a glass mold separated by a hollow silicone rubber gasket, place it in a hot water bath environment at 40°C, and react for 12 ...
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